-
InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
The most well known is the Eric Wastl's Advent of Code it will start dropping daily challenges at midnight EST (UTC-5) on December 1. The puzzles are language agnostic. You can solve them in whatever language you want.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.